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I use 4.1 grains of W231 with a 180 grain Montana Gold CMJ bullet and WSP primers, OAL 1.125. This is out of my Glock 22. 4.0 grains also cycles but I had a few failure to feed out of 100 and zero failure to feed out of 100 with 4.1 grains. I don't know the velocity yet but I'm going to ask Dragoon to bring his chrony (assuming he has one) when I see him this weekend.